503040 rechargeable lithium ion polymer battery, nominal voltage 3.7V, full charge voltage 4.2V, 620mAh capacity, power 2.3Wh, battery size 1.614in×1.181in×0.196inch (L*W*T), prevent overcharge, overdischarge, overcurrent and short circuit.Compatible :COZMO Vector robot、 SkyBell HD WiFi Video Doorbell、Flysight FPV Watch、 wireless speaker Battery replacement。It can also be used in other 3.7-5V electronic products with power less than 2.3Wh (620mAh).Not compatible with Apple HomeKit or existing chimes.
Note: Installation requires existing doorbell wires at 16-24 VAC, 30 VA, or above. Electronic Chime Included: Supports 8 fun and holiday-themed ringtones and adjustable volume level.Ensuring you are only alerted when a human, and not a stray cat, is at the door.
The Alerts Which Matter: With AI technology and our sophisticated algorithm, the camera intelligently detects body shape and face pattern.Tell your friends to come round the back or that you have just run out to get some milk. Respond in Real-Time: Speak directly to anyone who approaches your front door via two-way audio.No Hidden Costs: Designed to protect your home as well as your wallet, eufy Security products are one-time purchases that combine security with convenience.A Crystal-Clear 2K Image: High Definition 2560 x 1920 resolution, combined with our advanced HDR and Distortion Correction, ensures video is recorded in 2x the quality.Once the recording is complete, the device sends the video to the SkyBell cloud servers, where it can be accessed almost immediately and is kept for seven (7) days.If the notification is not answered, the SkyBell records for 30 seconds in addition to the initial motion event, approximately 35-40 seconds. If the notification is answered, the SkyBell records for as long as the activity is detected. The SkyBell continues monitoring this activity energy from the PIR sensor and when meeting a more stringent threshold, it sends a notification to the phone. This activation triggers an initial motion event. When the PIR sensor senses activity (meets a certain threshold) and is activated, it immediately turns the camera on and starts to record directly to the device.The SkyBell device uses a PIR sensor (passive infrared sensor), which is an electronic sensor that measures infrared light radiating in the field of view think flood lights or motion detectors for your alarm system.This enhances the accuracy of motion detection, which will improve your overall SkyBell experience. Spherical aberration is a loss of definition in the image arising from the surface geometry of a spherical mirror or lens. This is a flat lens made of a number of concentric rings, to reduce spherical aberration. The motion sensor on the SkyBell HD contains a Fresnel lens.